Incubator-heater.



' PATENTED MAY 5, 1903.

0. P. SCOTT INGUBATOR HEATER.

AP'PLIOATION FILED JULY 16, 1902.

NO MODEL.

T M: NORHIQ PETERS mmuniwuwn. wAsumnTom u c.

Patented May 5, 1903.

P TENT OFFICE.

OLIVER P. SCOTT, F LAPORTE, INDIANA.

INCUBATOR-HEATER.

SPECIFICATION forming'part of Letters Patent No. 726,999, dated May 5, 1903.

Application filed July 16, 1902. Serial No. 115,816. (No model.)

To aZZ whom it Til/(Ly concern:

Be it known that I, OLIVER P. SCOTT, a citizen of the United States, residing at Laporte, in the county of Laporte andState of Indiana, have invented certain new and useful Improvements in Incubator-Heaters; and I do hereby declare the following to be a full, clear,

and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specificaize the heater to exhaust the foul air from the incubator.

The accompanying drawings illustrate the heater in connection with an incubator such as that described in the application above referred to. Figure 1 is a vertical section of the heater. Fig. 2 is a top plan view thereof. Fig. 3 isa section on the line 3 3 of Fig. 1. Fig. 4. is a section on the line 4. 4 of Fig. 1.

Referring specifically to the drawings, the lamp is indicated at 6, supported on a bracket 7 at the side of the incubator.

The heater comprises three concentric drums, (indicated at 8, 9, and 10.) The inner drum or tube 8 forms the chimney of the lamp, and its lower end is of suitable size and shape-to fit the chimney-socket 'of the lamp. This drum 8 is formed of metal and has conveuiently an opening covered with mica (intween the drums 8 and 9 is the heating-space:

in which the air supplied to the incubator is heated. The chimney 8 is closed at the top, as at 8". The outer drum 10 is preferably formed of asbestos or some other non-conducting substance, and this drum is spaced from the drum 9.

. 8indicates a cross-pipe leading from the chimney 8 across the drum'9 and into the space between the drums 9 and 10.

7 10 indicates a pipe, which is preferably widened or flattened, as shown, which extends through the top 11 of the heater into the space between the drums 9 and 10 and to within a short distance from the bottom thereof. The fumes. arising from the lamp pass from the chimney 8 through the tube 8 and into the drum 10, thence downwardly to the lower end of the tube 10, through which they escape upwardly and out at the top. A damper is indicated at 10 at the top of the tube 10 to regulate the escape of the heated air therefrom. In its downward course through the drum 10 the hot air and products of combustion from the lamp flow or spread around the drum. By this construction the pure-air-supply space between the chimney 8 and the drum 9 is surrounded bya superheating-drum, and said air receives heat by radiation from the chimney 8 and the drum 9.

The drums 9 and 10 are closed at the top by the top plate 11 except for the exits formed.

by the pipe 10, as above described, and a tubular opening 9 communicating with the drum 9. This opening is provided with a damper 9", which is operated from the incubator by connection with a thermostat'therein.

12 indicates the supply-pipe to the incubator. This pipe connects with the air-space between 8 and 9 and leads therefrom to the hatching-chamber of the incubator.

The space between the drums 9 and 10 is closed by a bottom plate 10 except Where a tube 13 enters. This tube is an exhaust-tube from the incubator to remove the vitiated air therefrom. It will be seen that the draft through the space-between the drums 9 and 10 and up through the pipe 10 will draw air through the pipe 13, and thereby form a positive exhaust for the incubator. Also the air supplied to the incubator does not pass in contact with the flame, and hence its incubating quality is not impaired, as would be the case if the oxygen were removed therefrom. The inner heating-chimney and the outer superheating-drum between which the pure air passes form an eificient and economical heating construction. The smoke or fumes from the burner cannot enter the incubator, and the exhaust from the incubator is conducted above the top of the heater,- to gether with the products of combustion.

WVhat I claim is 1. An incubator-heater comprising three concentric drums, the inner of which forms a chimney, the intermediate a heating-drum for the fresh air, and the outer a superheater for the intermediate drum, a pipe extending from the chimney to the space between the intermediate and the outer drum, and a pipe extending from the intermediate drum to the incubator.

2. I In an incubator-heater, the combination with the chimney closed at the top, the freshair drum surrounding the same, of the closed s'uperheating-drum surrounding the fresh-air drum and having a connection with the chimney at the top and a discharge-tube opening therein at the bottom.

3. In an incubator-heater, the combination with the innerchimney and the fresh-air drum surrounding the same,- of a superheatingdrum surrounding said drum and receiving the products of combustion from the chimney and conducting the same downwardly therein to discharge, and a damper in the top of the fresh-air drum. I

4. In an incubator-heater, the combination with spaced connected, inner and outer radiating-chambers receiving products of combustion, of a fresh-air-supply pipe leading from the space between the chambers to the incubator,and a foul-air-exhaust pipe leading from the incubator to one of said chambers.

In testimony whereof I affix my signature in presence of two witnesses.

OLIVER P. SCOTT.

Witnesses:

' M. LE BLANC,

G. F. SEYMOUR. 

